Update CMake for new files

ScuffedMinecraft/src/CMakeLists.txt

@@ -1,6 +1,7 @@
 add_executable(scuffed_mc
   Application.cpp Chunk.cpp Shader.cpp 
   Block.cpp NoiseSettings.cpp SurfaceFeature.cpp 
+  ChunkData.cpp ChunkPos.cpp Physics.cpp
   Camera.cpp Planet.cpp WorldGen.cpp ../vendor/glad.c
 )